This module, both source code and documentation, is in the
Public Domain, and comes with NO WARRANTY.
See http://www.saxproject.org
for further information.

This class implements the default behaviour for four SAX1
interfaces: EntityResolver, DTDHandler, DocumentHandler,
and ErrorHandler. It is now obsolete, but is included in SAX2 to
support legacy SAX1 applications. SAX2 applications should use
the DefaultHandler
class instead.

Application writers can extend this class when they need to
implement only part of an interface; parser writers can
instantiate this class to provide default handlers when the
application has not supplied its own.

Constructor Detail

HandlerBase

Method Detail

resolveEntity

Always return null, so that the parser will use the system
identifier provided in the XML document. This method implements
the SAX default behaviour: application writers can override it
in a subclass to do special translations such as catalog lookups
or URI redirection.

startDocument

By default, do nothing. Application writers may override this
method in a subclass to take specific actions at the beginning
of a document (such as allocating the root node of a tree or
creating an output file).

startElement

By default, do nothing. Application writers may override this
method in a subclass to take specific actions at the start of
each element (such as allocating a new tree node or writing
output to a file).

ignorableWhitespace

By default, do nothing. Application writers may override this
method to take specific actions for each chunk of ignorable
whitespace (such as adding data to a node or buffer, or printing
it to a file).

warning

The default implementation does nothing. Application writers
may override this method in a subclass to take specific actions
for each warning, such as inserting the message in a log file or
printing it to the console.

error

The default implementation does nothing. Application writers
may override this method in a subclass to take specific actions
for each error, such as inserting the message in a log file or
printing it to the console.

fatalError

The default implementation throws a SAXParseException.
Application writers may override this method in a subclass if
they need to take specific actions for each fatal error (such as
collecting all of the errors into a single report): in any case,
the application must stop all regular processing when this
method is invoked, since the document is no longer reliable, and
the parser may no longer report parsing events.